終了時のフレームサイズで起動する

frame-size-resume.el

(add-hook 'kill-emacs-hook 'frame-size-save); Emacs終了時
(add-hook 'window-setup-hook 'frame-size-resume); Emacs起動時
(defun frame-size-save ()
  (set-buffer
   (find-file-noselect (expand-file-name "~/.emacs.d/.framesize")))
  (erase-buffer)
  (insert (concat
           "(set-frame-width (selected-frame) "
           (int-to-string (frame-width))
           ") (set-frame-height (selected-frame) "
           (int-to-string (frame-height))
           ")"))
  (save-buffer)
  (kill-buffer))
(defun frame-size-resume ()
  (let* ((file "~/.emacs.d/.framesize"))
    (if (file-exists-p file)
        (load-file file))))